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A
ab
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ag
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ar
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at
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quota
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V
vdfuse
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vi
vmstat
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W
w
wait
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whereis
which
who
whoami
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X
xargs
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Y
yes
ypdomainname
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Z
zcat
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zip
zipinfo
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其他
7z
join - Linux命令大全 - 笔下光年
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join
两个文件中指定栏位内容相同的行连接起来 ## 补充说明 **join命令** 用来将两个文件中,制定栏位内容相同的行连接起来。找出两个文件中,指定栏位内容相同的行,并加以合并,再输出到标准输出设备。 ### 语法 ```shell join(选项)(参数) ``` ### 选项 ```shell -a<1或2>:除了显示原来的输出内容之外,还显示指令文件中没有相同栏位的行; -e<字符串>:若[文件1]与[文件2]中找不到指定的栏位,则在输出中填入选项中的字符串; -i或--ignore-case:比较栏位内容时,忽略大小写的差异; -o<格式>:按照指定的格式来显示结果; -t<字符>:使用栏位的分割字符; -v<1或2>:更-a相同,但是只显示文件中没有相同栏位的行; -1<栏位>:连接[文件1]指定的栏位; -2<栏位>:连接[文件2]指定的栏位。 ``` ### 参数 * 文件1:要进行合并操作的第1个文件参数; * 文件2:要进行合并操作的第2个文件参数。 ### 常见用法 把两个文件制定栏位内容相同的行连接起来: ```shell [root@localhost ~]# cat name 1 xiaoming 2 xiaowang 3 xiaoliu [root@localhost ~]# cat city 1 beijing beijing 2 hubei wuhan 3 hunan changsha # city文件在后,则拼接在后,如果city文件在前,则name文件拼接在后。 [root@localhost ~]# join name city 1 xiaoming beijing beijing 2 xiaowang hubei wuhan 3 xiaoliu hunan changsha ``` 把两个文件指定列拼接起来: ```shell # 把name文件的第2列和city文件的第3列拼接起来 [root@localhost ~]# join -o 1.2 2.3 name city xiaoming beijing xiaowang wuhan xiaoliu changsha ```
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